Patent US3098174A successfully refreshed from Google Patents.
US3098174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply for spark discharge machining
Assignee: Individual
•
Filing: 1961-04-28
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Granted: 1963-07-16
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Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 Inoue Kiyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:00
CPC Classifications
B; B23; B23H; B23H1/00; B23H1/02; B23H1/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN COMBINATION WITH AN ELECTRIC DISCHARGE MACHINING APPARATUS INCLUDING AN ELECTRODE AND WORK PIECE, AN ELECTRIC POWER SUPPLY CONNECTED TO SAID ELECTRODE AND WORK PIECE TO PRODUCE A MACHINING DISCHARGE ACROSS THE GAP FORMED THEREBETWEEN, SAID POWER SUPPLY COMPRISING MEANS FOR GENERATING A MACHINING DISCHARGE WAVE FORM COMPRISING RECURRING IMPUSES OF PREDETERMINED DURATION AND MAGNITUDE AND RELATIVELY HIGH-FREQUENCY OSCILLATIONS OF PREDETERMINED AMPLITUDE SUPERIMPOSED ON SAID IMPULSES, AND MEANS IN SAID POWER SUPPLY CONTROLLABLE TO VARY THE MAGNITUDE OF SAID IMPULSES IN RELATION TO THE AMPLITUDE OF SAID OSCILLATIONS.
Claim 2
Dependent Claim
88 words
IN COMBINATION WITH AN ELECTRIC DISCHARGE MACHINING APPARATUS INCLUDING AN ELECTRODE AND WORK PIECE, AN ELECTRIC POWER SUPPLY CONNECTED TO SAID ELECTRODE AND WORK PIECE TO PRODUCE A MACHINING DISCHARGE ACROSS THE GAP FORMED THEREBETWEEN, SAID POWER SUPPLY COMPRISING MEANS FOR GENERATING A MACHINING DISCHARGE WAVE FORM COMPRISING RECURRING IMPUSES OF PREDETERMINED DURATION AND MAGNITUDE AND RELATIVELY HIGH-FREQUENCY OSCILLATIONS OF PREDETERMINED AMPLITUDE SUPERIMPOSED ON SAID IMPULSES, AND MEANS IN SAID POWER SUPPLY CONTROLLABLE TO VARY THE MAGNITUDE OF SAID IMPULSES IN RELATION TO THE AMPLITUDE OF SAID OSCILLATIONS.
References Cited (Backward Citations)
GB843348A
Cited
US2856565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |